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 You Are Here: Front Page » Air Compressor Parts: Belts, Filters, Regulators & More » ABAC Parts, American IMC Parts, BelAire Air Compressor Parts | mastertoolrepair. » Parts for ABAC, IMC Compressor Pumps » BelAire B2800, B3800, NS18S & 4116091337 Air Compressor Parts
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IMC-ATLAS COPCO Air Compressor Pump Parts B2800, B3800, NS18S, 4116091337

ABAC, IMC Compressor Pump Parts

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Product Details
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Or click the schematic below to enlarge and select your parts by clicking the part reference numbers.
Model: B2800, B3800, NS18S, 4116091337

Pump Parts

B2800, B3800, NS18S, 4116091337 - Air Compressor Pump Parts

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B2800, B3800, NS18S, 4116091337 - Air Compressor Pump Parts schematic
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Product Specifications

  • 7.41 cfm @ 100 psi w/ 5 HP motor
  • 3 - 5 HP
  • Min RPM 700 Max RPM 1400
  • Max Pressure 130 psi
  • Flywheel is 13.78" for B3800
  • Bore 2.36
  • Stroke 1.97
  • Belt A-1
  • Weight 24 lbs.
  • 11.02 L x 10.94 W x 12.75 H for B3000 13.00 L x 11.38 W x 13.56 H for B3800
  • Bolt Footprint 7.44" Side to Side 5.62" Front to Back for B3000
  • Oil capacity 1qt 12 ozs. for B3800
Extra Details

How to tell if you have a B3800 or a B2800 pump.
B3800 Flywheel diameter is 13.78".
B2800 Flywheel diameter is 11.02".
NS18S pump had same parts except for head and aftercooler.

Tech Pubs




Standard break-in procedure:

1. Open drain tap

2. Turn on compressor for about 10 to 15 min.

3. Let it cool for 15 to 20 min.

4. Close drain tap.

5.Run air compressor until unit turns off by itself.

6. Ready for use.

 *Please select the quantity for each item you wish to order and click the 'Add To Cart' button below.

Displaying 27 products

Reference Item Please Note! Old Part # Current Part # Price Product Image Select Qty Status
(not shown)B2800 Pump Replacement pump. 1.5 - 5 HP, 2 Cycle, Single Stage 10 CFM @ 1400 Max RPM 125 - 135 PSI1312100119$257.381312100119 - B2800 Pump-
(not shown)B3800 PumpThe B3800 pump includes a flywheel, sight glass, breather and air filter. (no aftercooler).  Click Here to see the full technical specifications on this pumpB3800$397.15B3800 - B3800 Pump-
(not shown)Ns18s PumpSame as B3800. Includes aftercooler, flywheel and air filter.NS18S$204.27NS18S - Ns18s Pump-
(not shown)Oil Drain Plug9101154$1.059101154 - Oil Drain Plug-
Aftercooler KitIncludes aftercooler, gasket and bolts.9428080$22.19-
(not shown)Filter AdapterFilter Adapter (NS18S/T29S pumps) that uses the Canister Filter Style.1400477$9.05-
(not shown)Oil Drain Extension8mm metric oil drain extension tube. Add this to prevent oil spills when draining your oil. Order 2 as a spare. (does not include cap)9053853$5.53-
(not shown)Service Maint Kit, B2800, B3800 Kit for one service on pump. Kit includes one plastic style air filter and 1 Qt. of 30W compressor oil. NOTE: Not for NS18S pump.KT38M$27.09KT38M - Service Maint Kit, B2800, B3800-
00001Valve Assby. Valve plate assby. w/ upper and lower gaskets.28400509428001$54.319428001 - Valve Assby.-
Reference Item Please Note! Old Part # Current Part # Price Product Image
00002KIT CONROD B3800-B3801 For B3800 pump6229021800$147.97-
00002Piston/rod Assby. (ea.) For B2800 ONLY. Piston/Rings/Connecting Rod Assy.94280101310711171$43.54-
00003Crank KitFor B3800. Crank and bearings. Replace if scored. 8-12 week delivery9428022$154.479428022 - Crank Kit-
00004Crankcase Bottom KitFor B3800. Includes bottom pan and gasket9428031$38.529428031 - Crankcase Bottom Kit-
00004Crankcase Bottom KitFor B2800. Includes bottom pan and gasket94280306229022500$58.76-
00004aCrankcase GasketFor B3800.3650201$10.47-
00007Head KitHead and head gasket. Kit is for the B2800 and B3800. 9428060$46.539428060 - Head Kit-
00007aHeadHead is ONLY for the NS18S. Gaskets required.AB38604003860400$28.643860400 - Head-
00008Flywheel For B3800 pump. Flywheel only. Bolt and washer sold separately2236102115, 3600100, 3600181, 94280711310711155$87.13-
Reference Item Please Note! Old Part # Current Part # Price Product Image
00008Flywheel, B2800For B2800 pump.6229023400$125.02-
00009Gasket Kit (less Oil Pan Gasket)Gaskets shown on schematic.9428090$19.829428090 - Gasket Kit (less Oil Pan Gasket)-
00010Oil Level KitIncludes oil sight glass and breather with gaskets.032-0044, 22361029929428100$23.219428100 - Oil Level Kit-
00011aAir Filter AssbyPlastic style. Includes filter housing and element.9428110$10.439428110 - Air Filter Assby-
00011bAir Filter Assembly (1/2" MPT) 1/2" MPT x Ht 4.19" x W 4.12" Twist lockG154SFS-10-052$21.90FS-10-052 - Air Filter Assembly (1/2" MPT)-
00011cReplacement Element for (#3) Canister 4" Diameter. Canister Air Filter Element. Element only for air filter assembly.G54E10$13.6010 - Replacement Element for (#3) Canister-
00012Ring Kit (2 required)94281201310711172$29.541310711172 - Ring Kit-
00028aAftercooler Gasket Aftercooler Gasket (pump mfg before 2007). Bigger aftercooler gasket is OBSOLETE.3670200(X)-
00028bAftercooler Gasket Aftercooler gasket for B3800 pump (manufactured after 2007)1070200$5.301070200 - Aftercooler Gasket-
Reference Item Please Note! Old Part # Current Part # Price Product Image

Displaying 27 products
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